Apple's watchOS 9.5 may have a bug that is causing some Apple Watches to have a gray or green tint to the display in specific areas, and there doesn't appear to be a fix yet.
Example of the coloration from Reddit user "Ninolacom"Users on Reddit have started seeing a gray or green tint when accessing the Control Center and Notification Center on their Apple Watch after the most recent update. Some people are seeing it on the Apple Watch Series 8, Apple Watch Series 7, and Apple Watch SE, although it may appear on other models too.
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Example of the coloration from Reddit user "Ninolacom"Read more...